HI @owiec
Thanks for the feedback. I am afraid you did nothing wrong. My guess: You run into the limits of the Sik radios.
I have used this with one GCS and two vehicles. The setup was similar to your test n.1. For your test no.2 I don’t understand how the “NODEID=0 radio” is connected in this setup. From my understanding here the NODECOUNT should be 5. You have 5 radios in use: 3 drones, one GCS and the Sync-radio.
You can have less radio’s in use as NODECOUNT expects as long as NODEID=0 is there. This works fine. The other way around a lot of data packet collisions will be there.
The NODEID=0 is necessary to keep the radio’s synchronized.
To improve the system performance I had to reduce the data streaming rates a lot. Lots of ideas can be found here. The data rate through the Sik-radios is very limited. It’s worse at distance.
This doesn’t solve the problem but reduces the bad effects.